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Investments and Fair Value Measurements
12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
INVESTMENTS AND FAIR VALUE MEASUREMENTS INVESTMENTS AND FAIR VALUE MEASUREMENTS
The Company’s financial assets and liabilities subject to fair value measurements were as follows:
Fair Value Measurements as of December 31, 2023
DescriptionTotalQuoted Prices in Active Markets for Identical Assets
(Level 1)

Significant Other Observable Inputs
(Level 2)


Significant Unobservable Inputs
(Level 3)
Assets:
Money market funds (1)
$59,595 $59,595 $— $— 
U. S. treasury bills (2)
51,200 51,200 — — 
Certificates of deposit (3)
507 — 507 — 
Long-term investments
PropTech convertible trading debt securities1,162 — — 1,162 
Long-term investment securities at fair value (4)
2,821 — — — 
Total long-term investments3,983 — — 1,162 
    Total assets$115,285 $110,795 $507 $1,162 
_____________________________
(1)Amounts included in Cash and cash equivalents on the consolidated balance sheets, except for $7,171 that is included in current restricted cash and cash equivalents and $2,538 that is included in non-current restricted assets.
(2)Amounts included in Cash and cash equivalents on the consolidated balance sheets.
(3)Amounts included in non-current restricted assets on the consolidated balance sheets.
(4)In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.
Fair Value Measurements as of December 31, 2022
DescriptionTotalQuoted Prices in Active Markets for Identical Assets
(Level 1)

Significant Other Observable Inputs
(Level 2)


Significant Unobservable Inputs
(Level 3)
Assets:
Money market funds (1)
$153,941 $153,941 $— $— 
Certificates of deposit (2)
569 — 569 — 
PropTech convertible trading debt securities1,875 — — 1,875 
Long-term investments
PropTech convertible trading debt securities1,082 — — 1,082 
Long-term investment securities at fair value (3)
3,262 — — — 
Total long-term investments4,344 — — 1,082 
 Total assets$160,729 $153,941 $569 $2,957 
_____________________________
(1)Amounts included in Cash and cash equivalents on the consolidated balance sheets, except for $4,985 that is included in current restricted assets and $2,538 that is included in non-current restricted assets.
(2)Amounts included in current restricted assets and non-current restricted assets on the consolidated balance sheets.
(3)In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.
The fair value of the Level 2 certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is the rate offered by the financial institution.
The fair values of the Level 3 PropTech convertible trading debt securities were derived using a discounted cash flow model utilizing a probability-weighted expected return method based on the probabilities of different potential outcomes for the convertible trading debt securities.
The long-term investments are based on NAV per share provided by the partnerships based on the indicated market value of the underlying assets or investment portfolio. In accordance with Subtopic 820-10, these investments are not classified under the fair value hierarchy disclosed above because they are measured at fair value using the NAV practical expedient.
The unobservable inputs related to the valuations of the Level 3 assets and liabilities were as follows at December 31, 2023:
Quantitative Information about Level 3 Fair Value Measurements
Fair Value at
December 31,
2023
Valuation TechniqueUnobservable InputRange (Actual)
PropTech convertible trading debt securities$1,162 Discounted cash flowInterest rate%
MaturityFeb 2025
Volatility40.25 %
Discount rate30.37 %
The unobservable inputs related to the valuations of the Level 3 assets and liabilities were as follows at December 31, 2022:
Quantitative Information about Level 3 Fair Value Measurements
Fair Value at
December 31,
2022
Valuation TechniqueUnobservable InputRange (Actual)
PropTech convertible trading debt securities$2,957 Discounted cash flowInterest rate
4% - 8%
Maturity
Mar 2023 - Feb 2025
Volatility
60.7% - 103.3%
Discount rate
29.39% - 186.15%
In addition to assets and liabilities that are recorded at fair value on a recurring basis, the Company is required to record assets and liabilities at fair value on a nonrecurring basis. Generally, assets and liabilities are recorded at fair value on a nonrecurring basis because of impairment charges. The Company had no nonrecurring nonfinancial assets subject to fair value measurements as of December 31, 2023 and 2022, respectively.